MySQL 8.0 does not support year in two-digit format. MS SQL Server Data Types String Data Types Data typeDescriptionMax char lengthStorage char(n)Fixed-length non-Unicode character data (n must be between 1 and 8000)8,000n bytes (uses one byte for each character) ...
mysql> create table t3(x decimal(66,30)); ERROR 1426 (42000): Too-big precision 66 specified for 'x'. Maximum is 65. mysql> create table t3(x decimal(65,30)); #建表成功 Query OK, 0 rows affected (0.02 sec) mysql> show tables; +---+ | Tables_in_db1 | +---+ | t1 | ...
4) 3 种注释 * 单行注释: -- 注释内容 或 # 注释内容(mysql 特有) * 多行注释: /* 注释 */ 3. SQL分类1) DDL(Data Definition Language)数据定义语言 用来定义数据库对象:数据库,表,列等。关键字:create, drop,alter 等 2) DML(Data Manipulation Language)数据操作语言 用来对数据库中表的数据进行...
For more information, see Data types (Transact-SQL) in the SQL Server documentation. MySQL Usage Amazon Aurora MySQL-Compatible Edition (Aurora MySQL) supports the following data types: CategoryData Types Numeric BIT, INTEGER, SMALLINT, TINYINT, MEDIUMINT, BIGINT, DECIMA...
For example, the Oracle database doesn’t support DATETIME, and MySQL doesn’t support CLOB. When designing database schemas and writing SQL queries, make sure to check if the data types are supported. Note: Data types listed here don’t include all the data types. These are the most com...
For example, the Oracle database doesn’t support DATETIME, and MySQL doesn’t support CLOB. When designing database schemas and writing SQL queries, make sure to check if the data types are supported. Note: Data types listed here don’t include all the data types. These are the most com...
MySQL Data Types The data types supported by MySQL are, Numeric Data Types Data TypeDescription BIT(x)can storex-bitvalues.xcan range from1to64 TINYINTcan store numbers from-128to127 SMALLINTcan store numbers from-32768to32767 MEDIUMINTcan store numbers from-8,388,608to8,388,607 ...
Example : Precision and Scale Examples for 235.89 Example : A table using numeric data types -- Creating a new table named "test" in the current schema CREATE TABLE test ( -- Defining a column named "id" of the DECIMAL data type, designated as the PRIMARY KEY ...
Mysql之sql语句操作 一、数据库级别操作 1、显示数据库 1 SHOW DATABASES; 默认数据库: mysql - 用户权限相关数据 test - 用于用户测试数据 information_schema - MySQL本身架构相关数据 2、创建数据库 1 2 3 4 5 # utf-8 CREATE DATABASE 数据库名称 DEFAULT CHARSET utf8 COLLATE utf8_general_ci; ...
SQL Date Data Types MySQLcomes with the following data types for storing a date or a date/time value in the database: DATE- format YYYY-MM-DD DATETIME- format: YYYY-MM-DD HH:MI:SS TIMESTAMP- format: YYYY-MM-DD HH:MI:SS YEAR- format YYYY or YY ...